Rock Breaker 3.6-4.5T Favourite This Equipment Description Suits all makes and models of mini excavator from 3.6 to 4.5 tonnes. Operating Weight: 224Kg Chisel Diameter: 60mm Oil Flow: 30-60 Lpm Operating Pressure: 110-140 Bar Impact Energy: 550 Joules Impact Rate: 500-900 Bpm Details Oil Pressure Range: 110-140 Bar Manufacture Year: 2023 Brand: Earthquake